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Merge branch 'master' of git://git.denx.de/u-boot-fdt

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This commit is contained in:
Tom Rini 2012-10-22 19:54:48 -07:00
commit 71724830b4
7 changed files with 590 additions and 30 deletions
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182
common/cmd_fdt.c
View File

@ -35,6 +35,9 @@
#define MAX_LEVEL 32 /* how deeply nested we will go */
#define SCRATCHPAD 1024 /* bytes of scratchpad memory */
#ifndef CONFIG_CMD_FDT_MAX_DUMP
#define CONFIG_CMD_FDT_MAX_DUMP 64
#endif
/*
* Global data (for the gd->bd)
@ -44,6 +47,7 @@ DECLARE_GLOBAL_DATA_PTR;
static int fdt_valid(void);
static int fdt_parse_prop(char *const*newval, int count, char *data, int *len);
static int fdt_print(const char *pathp, char *prop, int depth);
static int is_printable_string(const void *data, int len);
/*
* The working_fdt points to our working flattened device tree.
@ -60,6 +64,34 @@ void set_working_fdt_addr(void *addr)
setenv("fdtaddr", buf);
}
/*
* Get a value from the fdt and format it to be set in the environment
*/
static int fdt_value_setenv(const void *nodep, int len, const char *var)
{
if (is_printable_string(nodep, len))
setenv(var, (void *)nodep);
else if (len == 4) {
char buf[11];
sprintf(buf, "0x%08X", *(uint32_t *)nodep);
setenv(var, buf);
} else if (len%4 == 0 && len <= 20) {
/* Needed to print things like sha1 hashes. */
char buf[41];
int i;
for (i = 0; i < len; i += sizeof(unsigned int))
sprintf(buf + (i * 2), "%08x",
*(unsigned int *)(nodep + i));
setenv(var, buf);
} else {
printf("error: unprintable value\n");
return 1;
}
return 0;
}
/*
* Flattened Device Tree command, see the help for parameter definitions.
*/
@ -250,6 +282,117 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
return 1;
}
/********************************************************************
* Get the value of a property in the working_fdt.
********************************************************************/
} else if (argv[1][0] == 'g') {
char *subcmd; /* sub-command */
char *pathp; /* path */
char *prop; /* property */
char *var; /* variable to store result */
int nodeoffset; /* node offset from libfdt */
const void *nodep; /* property node pointer */
int len = 0; /* new length of the property */
/*
* Parameters: Node path, property, optional value.
*/
if (argc < 5)
return CMD_RET_USAGE;
subcmd = argv[2];
if (argc < 6 && subcmd[0] != 's')
return CMD_RET_USAGE;
var = argv[3];
pathp = argv[4];
prop = argv[5];
nodeoffset = fdt_path_offset(working_fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf("libfdt fdt_path_offset() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
if (subcmd[0] == 'n' || (subcmd[0] == 's' && argc == 5)) {
int reqIndex = -1;
int startDepth = fdt_node_depth(
working_fdt, nodeoffset);
int curDepth = startDepth;
int curIndex = -1;
int nextNodeOffset = fdt_next_node(
working_fdt, nodeoffset, &curDepth);
if (subcmd[0] == 'n')
reqIndex = simple_strtoul(argv[5], NULL, 16);
while (curDepth > startDepth) {
if (curDepth == startDepth + 1)
curIndex++;
if (subcmd[0] == 'n' && curIndex == reqIndex) {
const char *nodeName = fdt_get_name(
working_fdt, nextNodeOffset, NULL);
setenv(var, (char *)nodeName);
return 0;
}
nextNodeOffset = fdt_next_node(
working_fdt, nextNodeOffset, &curDepth);
if (nextNodeOffset < 0)
break;
}
if (subcmd[0] == 's') {
/* get the num nodes at this level */
char buf[11];
sprintf(buf, "%d", curIndex + 1);
setenv(var, buf);
} else {
/* node index not found */
printf("libfdt node not found\n");
return 1;
}
} else {
nodep = fdt_getprop(
working_fdt, nodeoffset, prop, &len);
if (len == 0) {
/* no property value */
setenv(var, "");
return 0;
} else if (len > 0) {
if (subcmd[0] == 'v') {
int ret;
ret = fdt_value_setenv(nodep, len, var);
if (ret != 0)
return ret;
} else if (subcmd[0] == 'a') {
/* Get address */
char buf[11];
sprintf(buf, "0x%08X", (uint32_t)nodep);
setenv(var, buf);
} else if (subcmd[0] == 's') {
/* Get size */
char buf[11];
sprintf(buf, "0x%08X", len);
setenv(var, buf);
} else
return CMD_RET_USAGE;
return 0;
} else {
printf("libfdt fdt_getprop(): %s\n",
fdt_strerror(len));
return 1;
}
}
/*
* Print (recursive) / List (single level)
*/
@ -611,12 +754,12 @@ static int is_printable_string(const void *data, int len)
if (len == 0)
return 0;
/* must terminate with zero */
if (s[len - 1] != '\0')
/* must terminate with zero or '\n' */
if (s[len - 1] != '\0' && s[len - 1] != '\n')
return 0;
/* printable or a null byte (concatenated strings) */
while (((*s == '\0') || isprint(*s)) && (len > 0)) {
while (((*s == '\0') || isprint(*s) || isspace(*s)) && (len > 0)) {
/*
* If we see a null, there are three possibilities:
* 1) If len == 1, it is the end of the string, printable
@ -672,19 +815,28 @@ static void print_data(const void *data, int len)
}
if ((len %4) == 0) {
const u32 *p;
if (len > CONFIG_CMD_FDT_MAX_DUMP)
printf("* 0x%08x [0x%08x]", (unsigned int)data, len);
else {
const u32 *p;
printf("<");
for (j = 0, p = data; j < len/4; j ++)
printf("0x%x%s", fdt32_to_cpu(p[j]), j < (len/4 - 1) ? " " : "");
printf(">");
printf("<");
for (j = 0, p = data; j < len/4; j++)
printf("0x%08x%s", fdt32_to_cpu(p[j]),
j < (len/4 - 1) ? " " : "");
printf(">");
}
} else { /* anything else... hexdump */
const u8 *s;
if (len > CONFIG_CMD_FDT_MAX_DUMP)
printf("* 0x%08x [0x%08x]", (unsigned int)data, len);
else {
const u8 *s;
printf("[");
for (j = 0, s = data; j < len; j++)
printf("%02x%s", s[j], j < len - 1 ? " " : "");
printf("]");
printf("[");
for (j = 0, s = data; j < len; j++)
printf("%02x%s", s[j], j < len - 1 ? " " : "");
printf("]");
}
}
}
@ -824,6 +976,10 @@ U_BOOT_CMD(
"fdt resize - Resize fdt to size + padding to 4k addr\n"
"fdt print <path> [<prop>] - Recursive print starting at <path>\n"
"fdt list <path> [<prop>] - Print one level starting at <path>\n"
"fdt get value <var> <path> <prop> - Get <property> and store in <var>\n"
"fdt get name <var> <path> <index> - Get name of node <index> and store in <var>\n"
"fdt get addr <var> <path> <prop> - Get start address of <property> and store in <var>\n"
"fdt get size <var> <path> [<prop>] - Get size of [<property>] or num nodes and store in <var>\n"
"fdt set <path> <prop> [<val>] - Set <property> [to <val>]\n"
"fdt mknode <path> <node> - Create a new node after <path>\n"
"fdt rm <path> [<prop>] - Delete the node or <property>\n"

46
common/image.c
View File

@ -2496,6 +2496,36 @@ int fit_image_hash_get_value(const void *fit, int noffset, uint8_t **value,
return 0;
}
#ifndef USE_HOSTCC
/**
* fit_image_hash_get_ignore - get hash ignore flag
* @fit: pointer to the FIT format image header
* @noffset: hash node offset
* @ignore: pointer to an int, will hold hash ignore flag
*
* fit_image_hash_get_ignore() finds hash ignore property in a given hash node.
* If the property is found and non-zero, the hash algorithm is not verified by
* u-boot automatically.
*
* returns:
* 0, on ignore not found
* value, on ignore found
*/
int fit_image_hash_get_ignore(const void *fit, int noffset, int *ignore)
{
int len;
int *value;
value = (int *)fdt_getprop(fit, noffset, FIT_IGNORE_PROP, &len);
if (value == NULL || len != sizeof(int))
*ignore = 0;
else
*ignore = *value;
return 0;
}
#endif
/**
* fit_set_timestamp - set node timestamp property
* @fit: pointer to the FIT format image header
@ -2759,6 +2789,9 @@ int fit_image_check_hashes(const void *fit, int image_noffset)
char *algo;
uint8_t *fit_value;
int fit_value_len;
#ifndef USE_HOSTCC
int ignore;
#endif
uint8_t value[FIT_MAX_HASH_LEN];
int value_len;
int noffset;
@ -2795,6 +2828,14 @@ int fit_image_check_hashes(const void *fit, int image_noffset)
}
printf("%s", algo);
#ifndef USE_HOSTCC
fit_image_hash_get_ignore(fit, noffset, &ignore);
if (ignore) {
printf("-skipped ");
continue;
}
#endif
if (fit_image_hash_get_value(fit, noffset, &fit_value,
&fit_value_len)) {
err_msg = " error!\nCan't get hash value "
@ -2820,6 +2861,11 @@ int fit_image_check_hashes(const void *fit, int image_noffset)
}
}
if (noffset == -FDT_ERR_TRUNCATED || noffset == -FDT_ERR_BADSTRUCTURE) {
err_msg = " error!\nCorrupted or truncated tree";
goto error;
}
return 1;
error:

4
include/image.h
View File

@ -511,6 +511,7 @@ static inline int image_check_target_arch(const image_header_t *hdr)
#define FIT_HASH_NODENAME "hash"
#define FIT_ALGO_PROP "algo"
#define FIT_VALUE_PROP "value"
#define FIT_IGNORE_PROP "uboot-ignore"
/* image node */
#define FIT_DATA_PROP "data"
@ -595,6 +596,9 @@ int fit_image_get_data(const void *fit, int noffset,
int fit_image_hash_get_algo(const void *fit, int noffset, char **algo);
int fit_image_hash_get_value(const void *fit, int noffset, uint8_t **value,
int *value_len);
#ifndef USE_HOSTCC
int fit_image_hash_get_ignore(const void *fit, int noffset, int *ignore);
#endif
int fit_set_timestamp(void *fit, int noffset, time_t timestamp);
int fit_set_hashes(void *fit);

275
include/libfdt.h
View File

@ -852,17 +852,17 @@ int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
const void *val, int len);
/**
* fdt_setprop_inplace_cell - change the value of a single-cell property
* fdt_setprop_inplace_u32 - change the value of a 32-bit integer property
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of the node whose property to change
* @name: name of the property to change
* @val: cell (32-bit integer) value to replace the property with
* @val: 32-bit integer value to replace the property with
*
* fdt_setprop_inplace_cell() replaces the value of a given property
* with the 32-bit integer cell value in val, converting val to
* big-endian if necessary. This function cannot change the size of a
* property, and so will only work if the property already exists and
* has length 4.
* fdt_setprop_inplace_u32() replaces the value of a given property
* with the 32-bit integer value in val, converting val to big-endian
* if necessary. This function cannot change the size of a property,
* and so will only work if the property already exists and has length
* 4.
*
* This function will alter only the bytes in the blob which contain
* the given property value, and will not alter or move any other part
@ -871,7 +871,7 @@ int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
* returns:
* 0, on success
* -FDT_ERR_NOSPACE, if the property's length is not equal to 4
* -FDT_ERR_NOTFOUND, node does not have the named property
* -FDT_ERR_NOTFOUND, node does not have the named property
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
@ -879,13 +879,59 @@ int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
* -FDT_ERR_BADSTRUCTURE,
* -FDT_ERR_TRUNCATED, standard meanings
*/
static inline int fdt_setprop_inplace_cell(void *fdt, int nodeoffset,
const char *name, uint32_t val)
static inline int fdt_setprop_inplace_u32(void *fdt, int nodeoffset,
const char *name, uint32_t val)
{
val = cpu_to_fdt32(val);
return fdt_setprop_inplace(fdt, nodeoffset, name, &val, sizeof(val));
}
/**
* fdt_setprop_inplace_u64 - change the value of a 64-bit integer property
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of the node whose property to change
* @name: name of the property to change
* @val: 64-bit integer value to replace the property with
*
* fdt_setprop_inplace_u64() replaces the value of a given property
* with the 64-bit integer value in val, converting val to big-endian
* if necessary. This function cannot change the size of a property,
* and so will only work if the property already exists and has length
* 8.
*
* This function will alter only the bytes in the blob which contain
* the given property value, and will not alter or move any other part
* of the tree.
*
* returns:
* 0, on success
* -FDT_ERR_NOSPACE, if the property's length is not equal to 8
* -FDT_ERR_NOTFOUND, node does not have the named property
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
* -FDT_ERR_BADSTRUCTURE,
* -FDT_ERR_TRUNCATED, standard meanings
*/
static inline int fdt_setprop_inplace_u64(void *fdt, int nodeoffset,
const char *name, uint64_t val)
{
val = cpu_to_fdt64(val);
return fdt_setprop_inplace(fdt, nodeoffset, name, &val, sizeof(val));
}
/**
* fdt_setprop_inplace_cell - change the value of a single-cell property
*
* This is an alternative name for fdt_setprop_inplace_u32()
*/
static inline int fdt_setprop_inplace_cell(void *fdt, int nodeoffset,
const char *name, uint32_t val)
{
return fdt_setprop_inplace_u32(fdt, nodeoffset, name, val);
}
/**
* fdt_nop_property - replace a property with nop tags
* @fdt: pointer to the device tree blob
@ -945,11 +991,20 @@ int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size);
int fdt_finish_reservemap(void *fdt);
int fdt_begin_node(void *fdt, const char *name);
int fdt_property(void *fdt, const char *name, const void *val, int len);
static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
static inline int fdt_property_u32(void *fdt, const char *name, uint32_t val)
{
val = cpu_to_fdt32(val);
return fdt_property(fdt, name, &val, sizeof(val));
}
static inline int fdt_property_u64(void *fdt, const char *name, uint64_t val)
{
val = cpu_to_fdt64(val);
return fdt_property(fdt, name, &val, sizeof(val));
}
static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
{
return fdt_property_u32(fdt, name, val);
}
#define fdt_property_string(fdt, name, str) \
fdt_property(fdt, name, str, strlen(str)+1)
int fdt_end_node(void *fdt);
@ -959,6 +1014,7 @@ int fdt_finish(void *fdt);
/* Read-write functions */
/**********************************************************************/
int fdt_create_empty_tree(void *buf, int bufsize);
int fdt_open_into(const void *fdt, void *buf, int bufsize);
int fdt_pack(void *fdt);
@ -1068,14 +1124,14 @@ int fdt_setprop(void *fdt, int nodeoffset, const char *name,
const void *val, int len);
/**
* fdt_setprop_cell - set a property to a single cell value
* fdt_setprop_u32 - set a property to a 32-bit integer
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of the node whose property to change
* @name: name of the property to change
* @val: 32-bit integer value for the property (native endian)
*
* fdt_setprop_cell() sets the value of the named property in the
* given node to the given cell value (converting to big-endian if
* fdt_setprop_u32() sets the value of the named property in the given
* node to the given 32-bit integer value (converting to big-endian if
* necessary), or creates a new property with that value if it does
* not already exist.
*
@ -1095,13 +1151,59 @@ int fdt_setprop(void *fdt, int nodeoffset, const char *name,
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_TRUNCATED, standard meanings
*/
static inline int fdt_setprop_cell(void *fdt, int nodeoffset, const char *name,
uint32_t val)
static inline int fdt_setprop_u32(void *fdt, int nodeoffset, const char *name,
uint32_t val)
{
val = cpu_to_fdt32(val);
return fdt_setprop(fdt, nodeoffset, name, &val, sizeof(val));
}
/**
* fdt_setprop_u64 - set a property to a 64-bit integer
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of the node whose property to change
* @name: name of the property to change
* @val: 64-bit integer value for the property (native endian)
*
* fdt_setprop_u64() sets the value of the named property in the given
* node to the given 64-bit integer value (converting to big-endian if
* necessary), or creates a new property with that value if it does
* not already exist.
*
* This function may insert or delete data from the blob, and will
* therefore change the offsets of some existing nodes.
*
* returns:
* 0, on success
* -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
* contain the new property value
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
* -FDT_ERR_BADSTRUCTURE,
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_TRUNCATED, standard meanings
*/
static inline int fdt_setprop_u64(void *fdt, int nodeoffset, const char *name,
uint64_t val)
{
val = cpu_to_fdt64(val);
return fdt_setprop(fdt, nodeoffset, name, &val, sizeof(val));
}
/**
* fdt_setprop_cell - set a property to a single cell value
*
* This is an alternative name for fdt_setprop_u32()
*/
static inline int fdt_setprop_cell(void *fdt, int nodeoffset, const char *name,
uint32_t val)
{
return fdt_setprop_u32(fdt, nodeoffset, name, val);
}
/**
* fdt_setprop_string - set a property to a string value
* @fdt: pointer to the device tree blob
@ -1133,6 +1235,147 @@ static inline int fdt_setprop_cell(void *fdt, int nodeoffset, const char *name,
#define fdt_setprop_string(fdt, nodeoffset, name, str) \
fdt_setprop((fdt), (nodeoffset), (name), (str), strlen(str)+1)
/**
* fdt_appendprop - append to or create a property
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of the node whose property to change
* @name: name of the property to append to
* @val: pointer to data to append to the property value
* @len: length of the data to append to the property value
*
* fdt_appendprop() appends the value to the named property in the
* given node, creating the property if it does not already exist.
*
* This function may insert data into the blob, and will therefore
* change the offsets of some existing nodes.
*
* returns:
* 0, on success
* -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
* contain the new property value
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
* -FDT_ERR_BADSTRUCTURE,
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_TRUNCATED, standard meanings
*/
int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
const void *val, int len);
/**
* fdt_appendprop_u32 - append a 32-bit integer value to a property
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of the node whose property to change
* @name: name of the property to change
* @val: 32-bit integer value to append to the property (native endian)
*
* fdt_appendprop_u32() appends the given 32-bit integer value
* (converting to big-endian if necessary) to the value of the named
* property in the given node, or creates a new property with that
* value if it does not already exist.
*
* This function may insert data into the blob, and will therefore
* change the offsets of some existing nodes.
*
* returns:
* 0, on success
* -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
* contain the new property value
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
* -FDT_ERR_BADSTRUCTURE,
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_TRUNCATED, standard meanings
*/
static inline int fdt_appendprop_u32(void *fdt, int nodeoffset,
const char *name, uint32_t val)
{
val = cpu_to_fdt32(val);
return fdt_appendprop(fdt, nodeoffset, name, &val, sizeof(val));
}
/**
* fdt_appendprop_u64 - append a 64-bit integer value to a property
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of the node whose property to change
* @name: name of the property to change
* @val: 64-bit integer value to append to the property (native endian)
*
* fdt_appendprop_u64() appends the given 64-bit integer value
* (converting to big-endian if necessary) to the value of the named
* property in the given node, or creates a new property with that
* value if it does not already exist.
*
* This function may insert data into the blob, and will therefore
* change the offsets of some existing nodes.
*
* returns:
* 0, on success
* -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
* contain the new property value
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
* -FDT_ERR_BADSTRUCTURE,
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_TRUNCATED, standard meanings
*/
static inline int fdt_appendprop_u64(void *fdt, int nodeoffset,
const char *name, uint64_t val)
{
val = cpu_to_fdt64(val);
return fdt_appendprop(fdt, nodeoffset, name, &val, sizeof(val));
}
/**
* fdt_appendprop_cell - append a single cell value to a property
*
* This is an alternative name for fdt_appendprop_u32()
*/
static inline int fdt_appendprop_cell(void *fdt, int nodeoffset,
const char *name, uint32_t val)
{
return fdt_appendprop_u32(fdt, nodeoffset, name, val);
}
/**
* fdt_appendprop_string - append a string to a property
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of the node whose property to change
* @name: name of the property to change
* @str: string value to append to the property
*
* fdt_appendprop_string() appends the given string to the value of
* the named property in the given node, or creates a new property
* with that value if it does not already exist.
*
* This function may insert data into the blob, and will therefore
* change the offsets of some existing nodes.
*
* returns:
* 0, on success
* -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
* contain the new property value
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
* -FDT_ERR_BADSTRUCTURE,
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_TRUNCATED, standard meanings
*/
#define fdt_appendprop_string(fdt, nodeoffset, name, str) \
fdt_appendprop((fdt), (nodeoffset), (name), (str), strlen(str)+1)
/**
* fdt_delprop - delete a property
* @fdt: pointer to the device tree blob

2
lib/libfdt/Makefile
View File

@ -27,7 +27,7 @@ LIB = $(obj)libfdt.o
SOBJS =
COBJS-libfdt += fdt.o fdt_ro.o fdt_rw.o fdt_strerror.o fdt_sw.o fdt_wip.o
COBJS-libfdt += fdt.o fdt_ro.o fdt_rw.o fdt_strerror.o fdt_sw.o fdt_wip.o fdt_empty_tree.o
COBJS-$(CONFIG_OF_LIBFDT) += $(COBJS-libfdt)
COBJS-$(CONFIG_FIT) += $(COBJS-libfdt)

84
lib/libfdt/fdt_empty_tree.c Normal file
View File

@ -0,0 +1,84 @@
/*
* libfdt - Flat Device Tree manipulation
* Copyright (C) 2012 David Gibson, IBM Corporation.
*
* libfdt is dual licensed: you can use it either under the terms of
* the GPL, or the BSD license, at your option.
*
* a) This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* Alternatively,
*
* b) Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "libfdt_env.h"
#include <fdt.h>
#include <libfdt.h>
#include "libfdt_internal.h"
int fdt_create_empty_tree(void *buf, int bufsize)
{
int err;
err = fdt_create(buf, bufsize);
if (err)
return err;
err = fdt_finish_reservemap(buf);
if (err)
return err;
err = fdt_begin_node(buf, "");
if (err)
return err;
err = fdt_end_node(buf);
if (err)
return err;
err = fdt_finish(buf);
if (err)
return err;
return fdt_open_into(buf, buf, bufsize);
}

27
lib/libfdt/fdt_rw.c
View File

@ -293,6 +293,33 @@ int fdt_setprop(void *fdt, int nodeoffset, const char *name,
return 0;
}
int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
const void *val, int len)
{
struct fdt_property *prop;
int err, oldlen, newlen;
FDT_RW_CHECK_HEADER(fdt);
prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
if (prop) {
newlen = len + oldlen;
err = _fdt_splice_struct(fdt, prop->data,
FDT_TAGALIGN(oldlen),
FDT_TAGALIGN(newlen));
if (err)
return err;
prop->len = cpu_to_fdt32(newlen);
memcpy(prop->data + oldlen, val, len);
} else {
err = _fdt_add_property(fdt, nodeoffset, name, len, &prop);
if (err)
return err;
memcpy(prop->data, val, len);
}
return 0;
}
int fdt_delprop(void *fdt, int nodeoffset, const char *name)
{
struct fdt_property *prop;